This is a vintage-style heritage diver's rubber strap featuring a quick-release spring bar made from the new material FKM RUBBER. It is a reproduction of the diver's strap most loved by divers in the 1960s and 70s. The original strap at the time revolutionized diving belts by using isoprene material (natural rubber material). It was also officially adopted by many diver's watches and received overwhelming support from divers. This strap has been revived with an upgraded new material while maintaining the heritage design that also serves as ventilation holes on the strap body. By using FKM material, the best non-silicone fluororubber, the strap has been finished to be more supple, strong, and comfortable to wear. It is made with non-allergenic materials and excellent durability, using a special manufacturing method that does not contain any silicone. From the selection of materials to durability, texture, comfort, and the design of the details, we have paid close attention to every aspect. FKM Rubber, which has not been used as a strap material until now due to production costs, is used. This material is fluororubber and is a high-quality material also used in O-ring packings for automobiles and other applications that require high durability. It is very excellent in oil resistance, chemical resistance, heat resistance, flame resistance, weather resistance, and ozone resistance, making it a very suitable material for straps. In recent years, it has been officially adopted by many famous brand manufacturers for their genuine rubber straps. You can enjoy a comfortable fit with a soft touch feel while having moderate hardness. All metal parts, including the quick spring bar, are made of highly durable 316L stainless steel. Color: BLACK Strap Width: 20mm Buckle Attachment Width: 18mm Thickness: 5mm - 4mm (tapered) Buckle Side Length: 75mm (length does not include the buckle) Tip Side Length: 120mm *The watch body is not included in the listed strap. "Search Keywords" Submariner Seamaster Speedmaster Vintage Chronograph ISOFRANE